1 files changed, 52 insertions, 0 deletions
diff --git a/roms/u-boot/env/nowhere.c b/roms/u-boot/env/nowhere.c
new file mode 100644
index 000000000..41557f5ce
--- /dev/null
+++ b/roms/u-boot/env/nowhere.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000-2010
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Andreas Heppel <aheppel@sysgo.de>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <env.h>
+#include <env_internal.h>
+#include <asm/global_data.h>
+#include <linux/stddef.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Because we only ever have the default environment available we must mark
+ * it as invalid.
+ */
+static int env_nowhere_init(void)
+{
+	gd->env_addr	= (ulong)&default_environment[0];
+	gd->env_valid	= ENV_INVALID;
+
+	return 0;
+}
+
+static int env_nowhere_load(void)
+{
+	/*
+	 * for SPL, set env_valid = ENV_INVALID is enough as env_get_char()
+	 * return the default env if env_get is used
+	 * and SPL don't used env_import to reduce its size
+	 * For U-Boot proper, import the default environment to allow reload.
+	 */
+	if (!IS_ENABLED(CONFIG_SPL_BUILD))
+		env_set_default(NULL, 0);
+
+	gd->env_valid	= ENV_INVALID;
+
+	return 0;
+}
+
+U_BOOT_ENV_LOCATION(nowhere) = {
+	.location	= ENVL_NOWHERE,
+	.init		= env_nowhere_init,
+	.load		= env_nowhere_load,
+	ENV_NAME("nowhere")
+};